multifield.module in Multifield 7.2

Same filename and directory in other branches
7 multifield.module
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multifield.module
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<?php

require_once dirname(__FILE__) . '/multifield.field.inc';
require_once dirname(__FILE__) . '/multifield.features.inc';

/**
 * Implements hook_permission().
 */
function multifield_permission() {
  $info['administer multifield'] = array(
    'title' => t('Administer multifields'),
    'description' => t('Add, edit, or delete multifields.'),
    'restrict access' => TRUE,
  );
  return $info;
}

/**
 * Implements hook_menu().
 */
function multifield_menu() {
  $info['admin/structure/multifield'] = array(
    'title' => 'Multifields',
    'description' => 'Create and manage multifields and their subfields.',
    'page callback' => 'multifield_list_page',
    'access arguments' => array(
      'administer multifield',
    ),
    'file' => 'multifield.admin.inc',
  );

  // Disable the add form now that the 'Multifield' field type exists.
  $info['admin/structure/multifield/add'] = array(
    'title' => 'Add multifield',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'multifield_edit_form',
    ),
    'access callback' => FALSE,
    'type' => MENU_LOCAL_ACTION,
    'file' => 'multifield.admin.inc',
  );
  $info['admin/structure/multifield/manage/%multifield'] = array(
    'title' => 'Edit multifield',
    'title callback' => 'multifield_page_title',
    'title arguments' => array(
      4,
    ),
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'multifield_edit_form',
      4,
    ),
    'access callback' => 'multifield_edit_access',
    'access arguments' => array(
      4,
    ),
    'file' => 'multifield.admin.inc',
  );
  $info['admin/structure/multifield/manage/%multifield/edit'] = array(
    'title' => 'Edit',
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'weight' => -10,
  );
  $info['admin/structure/multifield/manage/%multifield/delete'] = array(
    'title' => 'Delete',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'multifield_delete_form',
      4,
    ),
    'access callback' => 'multifield_edit_access',
    'access arguments' => array(
      4,
    ),
    'type' => MENU_LOCAL_TASK,
    'file' => 'multifield.admin.inc',
    'weight' => 100,
  );
  $info['multifield/field-remove-item/ajax'] = array(
    'title' => 'Remove item callback',
    'page callback' => 'multifield_field_widget_remove_item_ajax',
    'delivery callback' => 'ajax_deliver',
    'access callback' => TRUE,
    'theme callback' => 'ajax_base_page_theme',
    'type' => MENU_CALLBACK,
    'file' => 'multifield.field.inc',
  );
  return $info;
}
function multifield_edit_access($multifield, $account = NULL) {
  return empty($multifield->locked) && user_access('administer multifield', $account);
}

/**
 * Implements hook_menu_alter().
 */
function multifield_menu_alter(&$items) {

  // Change the Field UI title of 'Manage fields' to 'Manage subfields'
  if (isset($items['admin/structure/multifield/manage/%multifield/fields'])) {
    $items['admin/structure/multifield/manage/%multifield/fields']['title'] = 'Manage subfields';
  }
}
function multifield_page_title($multifield) {
  return check_plain($multifield->label);
}

/**
 * Implements hook_entity_info().
 */
function multifield_entity_info() {
  $info['multifield'] = array(
    'label' => t('Multifield'),
    'controller class' => 'MultifieldEntityController',
    'base table' => 'multifield',
    'fieldable' => TRUE,
    // Mark this as a configuration entity type to prevent other modules from
    // assuming they can do stuff with this entity type.
    'configuration' => TRUE,
    'bundle keys' => array(
      'bundle' => 'machine_name',
    ),
    'entity keys' => array(
      'id' => 'id',
      'bundle' => 'type',
    ),
  );

  // Bundles must provide a human readable name so we can create help and error
  // messages, and the path to attach Field admin pages to.
  foreach (multifield_load_all() as $machine_name => $multifield) {
    $info['multifield']['bundles'][$machine_name] = array(
      'label' => $multifield->label,
      'admin' => array(
        'path' => 'admin/structure/multifield/manage/%multifield',
        'real path' => 'admin/structure/multifield/manage/' . $machine_name,
        'bundle argument' => 4,
        'access arguments' => array(
          'administer multifield',
        ),
      ),
    );
  }
  return $info;
}
function multifield_load($name) {
  $result = multifield_load_all();
  return isset($result[$name]) ? $result[$name] : FALSE;
}
function multifield_load_all() {
  ctools_include('export');
  $result = ctools_export_load_object('multifield');
  $fields = field_read_fields(array(
    'type' => 'multifield',
  ));
  foreach ($fields as $field) {
    $multifield = new stdClass();
    $multifield->machine_name = $field['field_name'];
    $multifield->label = $field['field_name'];
    $multifield->description = NULL;
    $multifield->locked = TRUE;
    $result[$multifield->machine_name] = $multifield;
  }
  return $result;
}
function multifield_save($multifield) {
  $return = NULL;
  module_invoke_all('multifield_presave', $multifield);
  if (!empty($multifield->mfid)) {

    // Existing record.
    $return = drupal_write_record('multifield', $multifield, array(
      'machine_name',
    ));
    module_invoke_all('mulifield_update', $multifield);
  }
  else {
    $return = drupal_write_record('multifield', $multifield, array());
    module_invoke_all('multifield_insert', $multifield);
    field_attach_create_bundle('multifield', $multifield->machine_name);
  }
  multifield_cache_clear();
  return $return;
}
function multifield_delete($multifield) {
  module_invoke_all('multifield_delete', $multifield);
  db_delete('multifield')
    ->condition('machine_name', $multifield->machine_name)
    ->execute();
  field_attach_delete_bundle('multifield', $multifield->machine_name);
  multifield_cache_clear();
}
function multifield_cache_clear() {
  field_info_cache_clear();
  drupal_static_reset('multifield_get_fields');
  drupal_static_reset('multifield_get_subfields');
  ctools_include('export');
  ctools_export_load_object_reset('multifield');
}
function multifield_field_machine_name_exists($name) {
  return field_info_field_types($name) || multifield_load($name);
}

/**
 * Get all multifield fields.
 *
 * @return array
 *   An array of multifield types, keyed by the respective field name.
 */
function multifield_get_fields() {
  $fields =& drupal_static(__FUNCTION__);
  if (!isset($fields)) {

    // @todo Is caching really necessary here? It's just one query.
    if ($cached = cache_get('field_info:multifields', 'cache_field')) {
      $fields = $cached->data;
    }
    else {

      // This query is based from FieldInfo::getFieldMap().
      $fields = db_query("SELECT fc.field_name, fc.type FROM {field_config} fc WHERE fc.active = 1 AND fc.storage_active = 1 AND fc.deleted = 0 AND fc.module = 'multifield'")
        ->fetchAllKeyed();
      foreach ($fields as $field_name => $field_type) {
        if ($field_type == 'multifield') {
          $fields[$field_name] = $field_name;
        }
      }
      cache_set('field_info:multifields', $fields, 'cache_field');
    }
  }
  return $fields;
}

/**
 * Check if a multifield has fields created from it.
 *
 * @param string $machine_name
 *   The machine name of the multifield.
 *
 * @return bool
 *   TRUE if the multifield has instances, or FALSE otherwise.
 */
function multifield_type_has_fields($machine_name) {
  return in_array($machine_name, multifield_get_fields());
}

/**
 * Get all the fields created from a certain multifield type.
 *
 * @param string $machine_name
 *   The machine name of the multifield.
 *
 * @return array
 *   An array of field names.
 */
function multifield_type_get_fields($machine_name) {
  return array_keys(array_intersect(multifield_get_fields(), array(
    $machine_name,
  )));
}

/**
 * Get all multifield subfields.
 *
 * @return array
 *   A multi-dimensional array of subfields, first keyed by multifield machine
 *   name.
 */
function multifield_get_subfields() {
  $subfields =& drupal_static(__FUNCTION__);
  if (!isset($subfields)) {
    if ($cached = cache_get('field_info:multifield:subfields', 'cache_field')) {
      $subfields = $cached->data;
    }
    else {
      $subfields = array();
      $results = db_query("SELECT fci.bundle, fci.field_name FROM {field_config_instance} fci INNER JOIN {field_config} fc ON fc.id = fci.field_id WHERE fc.active = 1 AND fc.storage_active = 1 AND fc.deleted = 0 AND fci.deleted = 0 AND fci.entity_type = 'multifield'")
        ->fetchAll();
      foreach ($results as $result) {
        if (!isset($subfields[$result->bundle])) {
          $subfields[$result->bundle] = array();
        }
        $subfields[$result->bundle][] = $result->field_name;
      }
      cache_set('field_info:multifield:subfields', $subfields, 'cache_field');
    }
  }
  return $subfields;
}

/**
 * Check if a multifield has subfields.
 *
 * @param string $machine_name
 *   The machine name of the multifield.
 *
 * @return bool
 *   TRUE if the multifield has subfields, or FALSE otherwise.
 */
function multifield_type_has_subfields($machine_name) {
  $subfields = multifield_get_subfields();
  return !empty($subfields[$machine_name]);
}

/**
 * Get all the fields created from a certain multifield type.
 *
 * @param string $machine_name
 *   The machine name of the multifield.
 *
 * @return array
 *   An array of field names.
 */
function multifield_type_get_subfields($machine_name) {
  $subfields = multifield_get_subfields();
  return isset($subfields[$machine_name]) ? $subfields[$machine_name] : array();
}
function multifield_type_has_data($machine_name) {
  foreach (multifield_type_get_fields($machine_name) as $field_name) {
    $field = field_info_field($field_name);
    if (field_has_data($field)) {
      return TRUE;
    }
  }
  return FALSE;
}

/**
 * Implements hook_field_create_field().
 */
function multifield_field_create_field($field) {
  if ($machine_name = multifield_extract_multifield_machine_name($field)) {
    if ($field['type'] == 'multifield') {
      field_attach_create_bundle('multifield', $machine_name);
    }
    multifield_cache_clear();
  }
}

/**
 * Implements hook_field_update_field().
 */
function multifield_field_update_field($field) {
  if ($machine_name = multifield_extract_multifield_machine_name($field)) {
    multifield_cache_clear();
  }
}

/**
 * Implements hook_field_delete_field().
 */
function multifield_field_delete_field($field) {
  if ($machine_name = multifield_extract_multifield_machine_name($field)) {
    if ($field['type'] == 'multifield') {
      field_attach_delete_bundle('multifield', $machine_name);
    }
    multifield_cache_clear();
  }
}

/**
 * Implements hook_field_create_instance().
 */
function multifield_field_create_instance($instance) {
  if ($instance['entity_type'] == 'multifield') {
    multifield_cache_clear();
    _multifield_update_field_schemas($instance['bundle']);
  }
}

/**
 * Implements hook_field_update_instance().
 */
function multifield_field_update_instance($instance) {
  if ($instance['entity_type'] == 'multifield') {
    multifield_cache_clear();
    _multifield_update_field_schemas($instance['bundle']);
  }
}

/**
 * Implements hook_field_delete_instance().
 */
function multifield_field_delete_instance($instance) {
  if ($instance['entity_type'] == 'multifield') {
    multifield_cache_clear();
    _multifield_update_field_schemas($instance['bundle']);
  }
}
function _multifield_update_field_schemas($machine_name) {
  foreach (multifield_type_get_fields($machine_name) as $field_name) {
    $field = field_read_field($field_name);
    if (!field_has_data($field)) {

      // Drupal core keeps existing, but should-be-removed indexes still in
      // the $field['indexes'] array. This is a hack to get it to always read
      // the indexes from multifield_field_schema().
      // @see https://www.drupal.org/node/2311095
      $field['indexes'] = array();
      field_update_field($field);
    }
  }
}
function _multifield_field_item_to_entity($machine_name, array $item) {
  $pseudo_entity = (object) ($item + array(
    'id' => NULL,
  ));
  $pseudo_entity->type = $machine_name;
  return $pseudo_entity;
}
function _multifield_field_entity_to_item($pseudo_entity) {
  $item = (array) $pseudo_entity;
  unset($item['type']);

  //$item['#pseudo_entity'] = $pseudo_entity;
  return $item;
}
function multifield_item_unserialize(&$item, $delta, $machine_name) {
  foreach (multifield_type_get_subfields($machine_name) as $subfield_name) {
    $subfield = field_info_field($subfield_name);
    foreach (array_keys($subfield['columns']) as $column) {
      if (array_key_exists($subfield_name . '_' . $column, $item)) {
        $item[$subfield_name][LANGUAGE_NONE][0][$column] = $item[$subfield_name . '_' . $column];
        unset($item[$subfield_name . '_' . $column]);
      }
    }
  }
}
function multifield_item_serialize(&$item, $delta, $machine_name) {

  // Serialize the multifield values into separate columns for saving into the
  // field table.
  foreach (multifield_type_get_subfields($machine_name) as $subfield_name) {
    $subfield = field_info_field($subfield_name);
    foreach ($subfield['columns'] as $column => $details) {

      // If the subfield is empty, skip it.
      if (empty($item[$subfield_name][LANGUAGE_NONE][0])) {
        unset($item[$subfield_name . '_' . $column]);
        continue;
      }

      // @see field_sql_storage_field_storage_write()
      // @todo Should this be using array_key_exists() instead of isset()?
      if (!isset($item[$subfield_name][LANGUAGE_NONE][0][$column])) {
        $item[$subfield_name][LANGUAGE_NONE][0][$column] = isset($details['default']) ? $details['default'] : NULL;
      }

      // We need to assign this value by reference because
      // $items[$delta][$subfield_name] could be modified in
      // multifield_field_insert() or multifield_field_update().
      $item[$subfield_name . '_' . $column] =& $item[$subfield_name][LANGUAGE_NONE][0][$column];
    }
  }
}
function multifield_get_next_id() {
  $id =& multifield_get_maximum_id();
  return ++$id;
}
function &multifield_get_maximum_id() {
  $id =& drupal_static(__FUNCTION__);
  if (!isset($id)) {
    $id = variable_get('multifield_max_id', 0);
  }
  return $id;
}
function multifield_update_maximum_id(array $items) {
  if (!empty($items)) {
    $max_id =& multifield_get_maximum_id();
    $ids = array();
    foreach ($items as $item) {
      $ids[] = $item['id'];
    }
    $largest_id = max($ids);
    if ($largest_id >= $max_id) {
      $max_id = $largest_id;
      variable_set('multifield_max_id', $largest_id);
    }
  }
}

// @todo Remove this function?
function _multifield_generate_unique_id() {
  $seen_ids =& drupal_static(__FUNCTION__, array());
  do {
    $id = mt_rand();
  } while (isset($seen_ids[$id]));
  $seen_ids[$id] = TRUE;
  return $id;
}
function multifield_items_extract_ids(array $items) {
  $ids = array();
  foreach ($items as $item) {
    $ids[] = $item['id'];
  }
  return $ids;
}

/**
 * Implements hook_form_FORM_ID_alter() for field_ui_field_overview_form().
 */
function multifield_form_field_ui_field_overview_form_alter(&$form, &$form_state) {
  $multifields = array_intersect_key(multifield_get_fields(), array_flip($form['#fields']));
  foreach ($multifields as $field_name => $machine_name) {
    $subfields = multifield_type_get_subfields($machine_name);
    if (!count($subfields)) {
      $form['fields'][$field_name]['#attributes']['class'][] = 'warning';
      $form['fields'][$field_name]['#attributes']['title'] = t('This multifield does not have any subfields yet.');
    }
    $form['fields'][$field_name]['type']['#suffix'] = ' | ' . l(t('Manage Subfields'), 'admin/structure/multifield/manage/' . $machine_name . '/fields', array(
      'query' => drupal_get_destination(),
    )) . '';
  }
  if ($form['#entity_type'] != 'multifield') {
    return;
  }

  // Prevent multifields from being added to multifields themselves.
  $form['fields']['_add_new_field']['type']['#options'] = array_diff_key($form['fields']['_add_new_field']['type']['#options'], module_invoke('multifield', 'field_info'));
  if (isset($form['fields']['_add_existing_field'])) {
    $form['fields']['_add_existing_field']['field_name']['#options'] = array_diff_key($form['fields']['_add_existing_field']['field_name']['#options'], multifield_get_fields());
  }

  // If this is a field attached to a multifield type that has instances, then
  // preven changes being made to it so that it will not change field schema.
  if (multifield_type_has_data($form['#bundle'])) {
    drupal_set_message(t('Because the multifield already has data, some subfield settings can no longer be changed.'), 'warning');

    //$form['fields']['_add_new_field']['#access'] = FALSE;

    //$form['fields']['_add_existing_field']['#access'] = FALSE;
    unset($form['fields']['_add_new_field']);
    unset($form['fields']['_add_existing_field']);
    unset($form['fields']['#regions']['add_new']);
    foreach ($form['#fields'] as $field_name) {
      $form['fields'][$field_name]['delete'] = array();
    }
  }
}

/**
 * Implements hook_form_FORM_ID_alter() for field_ui_field_edit_form().
 */
function multifield_form_field_ui_field_edit_form_alter(&$form, &$form_state) {
  _multifield_warn_no_subfields($form['#field']);
  if ($form['#instance']['entity_type'] != 'multifield') {
    return;
  }

  // Show a notice that multifield subfields have a cardinality of one value
  // enforced in the widget.
  $form['field']['cardinality']['#disabled'] = TRUE;
  $form['field']['cardinality']['#field_prefix'] = '<div class="messages warning">' . t('Field cardinality in multifields is limited to one value despite this setting.') . '</div>';

  // Hide the default value widget since we want the user to set the default
  // value for this entire multifield instead.
  if (isset($form['instance']['default_value_widget'])) {
    $form['instance']['default_value_widget']['#access'] = FALSE;
  }

  // If this multifield has instances, make sure that no field settings that
  // could change the field schema can be edited by re-invoking
  // hook_field_settings_form() with $has_data forced to be TRUE.
  if (multifield_type_has_data($form['#instance']['bundle'])) {
    $field = $form['#field'];
    $instance = $form['#instance'];
    $has_data = field_has_data($field);
    if (!$has_data) {
      $additions = module_invoke($field['module'], 'field_settings_form', $field, $instance, TRUE);
      if (is_array($additions)) {
        $form['field']['settings'] = $additions;
        $form['field']['#description'] = '<p>' . t('These settings apply to the %field field everywhere it is used.', array(
          '%field' => $instance['label'],
        )) . ' ' . t('Because the multifield already has data, some settings can no longer be changed.') . '</p>';
      }
    }
  }
}
function multifield_form_field_ui_field_settings_form_alter(&$form, &$form_state) {
  $instance = $form_state['build_info']['args'][0];
  $field = field_info_field($instance['field_name']);
  _multifield_warn_no_subfields($field);
  if ($form['#entity_type'] == 'multifield' && multifield_type_has_data($form['#bundle'])) {
    $field = field_info_field($instance['field_name']);
    $has_data = field_has_data($field);
    if (!$has_data) {
      $additions = module_invoke($field['module'], 'field_settings_form', $field, $instance, TRUE);
      if (is_array($additions)) {
        $form['field']['settings'] = $additions;
        $form['field']['#description'] = '<p>' . t('These settings apply to the %field field everywhere it is used.', array(
          '%field' => $instance['label'],
        )) . ' ' . t('Because the multifield already has data, some settings can no longer be changed.') . '</p>';
      }
    }
  }
}
function multifield_form_field_ui_field_delete_form_alter(&$form, &$form_state) {
  $instance = $form_state['build_info']['args'][0];
  if ($instance['entity_type'] == 'multifield' && multifield_type_has_data($instance['bundle'])) {
    $field = field_info_field($instance['field_name']);
    if (!$field['locked']) {
      $form['description']['#markup'] = '<div class="messages error">' . t('This field cannot be deleted since this multifield has instances.') . '</div>';
      unset($form['actions']['submit']);
    }
  }
}

/**
 * Implements hook_views_data_alter().
 */
function multifield_views_data_alter(array &$data) {

  // Remove any references to the fake multifield table.
  unset($data['multifield']);
  unset($data['entity_multifield']);
  unset($data['views_entity_multifield']);
  foreach ($data as &$table) {
    unset($table['table']['join']['multifield']);
    unset($table['table']['default_relationship']['multifield']);
  }
}

/**
 * Implements hook_admin_menu_map().
 */
function multifield_admin_menu_map() {
  if (!user_access('administer multifield')) {
    return;
  }
  $multifields = multifield_load_all();
  $map['admin/structure/multifield/manage/%multifield'] = array(
    'parent' => 'admin/structure/multifield',
    'arguments' => array(
      array(
        '%multifield' => array_keys($multifields),
      ),
    ),
  );
  return $map;
}

/**
 * Determine the multifield type given a field.
 */
function multifield_extract_multifield_machine_name(array $field) {
  if ($field['type'] == 'multifield') {
    return $field['field_name'];
  }
  elseif ($field['module'] == 'multifield') {
    return $field['type'];
  }
}
function _multifield_warn_no_subfields($field) {
  if ($machine_name = multifield_extract_multifield_machine_name($field)) {
    if (!multifield_type_has_subfields($machine_name) && module_exists('field_ui') && user_access('administer multifield')) {
      drupal_set_message(t('This multifield does not have any subfields yet. Go to the <a href="@subfields">manage subfields page</a> to add some.', array(
        '@subfields' => url('admin/structure/multifield/manage/' . $machine_name . '/fields'),
      )), 'error', FALSE);
    }
  }
}

/**
 * Run all of a given entity multifields' values through an entity hook.
 *
 * The hook will be called with the following two parameters:
 * 1. 'multifield' as the entity type
 * 2. The pseudo-entity representing the multifield item value.
 *
 * @param string $entity_type
 *   The entity type.
 * @param object $entity
 *   The entity.
 * @param string $hook
 *   The entity hook to invoke.
 *
 * @throws \EntityMalformedException
 */
function _multifield_entity_multifields_pseudo_entities_module_invoke($entity_type, $entity, $hook) {

  // It should not be possible to have multifields on a multifield entity
  // itself, so abort.
  if ($entity_type == 'multifield') {
    return;
  }
  list(, , $bundle) = entity_extract_ids($entity_type, $entity);
  $multifields = multifield_get_fields();
  $instances = array_intersect_key(field_info_instances($entity_type, $bundle), $multifields);
  foreach (array_keys($instances) as $field_name) {
    $machine_name = $multifields[$field_name];
    if (!empty($entity->{$field_name})) {
      foreach ($entity->{$field_name} as $langcode => &$items) {

        // Gather the original field values from the parent entity if it has them.
        $original_items = !empty($entity->original->{$field_name}[$langcode]) ? $entity->original->{$field_name}[$langcode] : array();
        foreach ($items as $delta => &$item) {
          $pseudo_entity = _multifield_field_item_to_entity($machine_name, $item);

          // Add the original item value to the pseudo-entity.
          if (!empty($original_items[$delta])) {
            $pseudo_entity->original = _multifield_field_item_to_entity($machine_name, $original_items[$delta]);
          }

          // Invoke the hook.
          module_invoke_all($hook, 'multifield', $pseudo_entity);

          // Serialize the item value back.
          unset($pseudo_entity->original);
          $item = _multifield_field_entity_to_item($pseudo_entity);
        }
      }
    }
  }
}
Functions

Name	Description
multifield_admin_menu_map	Implements hook_admin_menu_map().
multifield_cache_clear
multifield_delete
multifield_edit_access
multifield_entity_info	Implements hook_entity_info().
multifield_extract_multifield_machine_name	Determine the multifield type given a field.
multifield_field_create_field	Implements hook_field_create_field().
multifield_field_create_instance	Implements hook_field_create_instance().
multifield_field_delete_field	Implements hook_field_delete_field().
multifield_field_delete_instance	Implements hook_field_delete_instance().
multifield_field_machine_name_exists
multifield_field_update_field	Implements hook_field_update_field().
multifield_field_update_instance	Implements hook_field_update_instance().
multifield_form_field_ui_field_delete_form_alter
multifield_form_field_ui_field_edit_form_alter	Implements hook_form_FORM_ID_alter() for field_ui_field_edit_form().
multifield_form_field_ui_field_overview_form_alter	Implements hook_form_FORM_ID_alter() for field_ui_field_overview_form().
multifield_form_field_ui_field_settings_form_alter
multifield_get_fields	Get all multifield fields.
multifield_get_maximum_id
multifield_get_next_id
multifield_get_subfields	Get all multifield subfields.
multifield_items_extract_ids
multifield_item_serialize
multifield_item_unserialize
multifield_load
multifield_load_all
multifield_menu	Implements hook_menu().
multifield_menu_alter	Implements hook_menu_alter().
multifield_page_title
multifield_permission	Implements hook_permission().
multifield_save
multifield_type_get_fields	Get all the fields created from a certain multifield type.
multifield_type_get_subfields	Get all the fields created from a certain multifield type.
multifield_type_has_data
multifield_type_has_fields	Check if a multifield has fields created from it.
multifield_type_has_subfields	Check if a multifield has subfields.
multifield_update_maximum_id
multifield_views_data_alter	Implements hook_views_data_alter().
_multifield_entity_multifields_pseudo_entities_module_invoke	Run all of a given entity multifields' values through an entity hook.
_multifield_field_entity_to_item
_multifield_field_item_to_entity
_multifield_generate_unique_id
_multifield_update_field_schemas
_multifield_warn_no_subfields
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multifield.module in Multifield 7.2

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